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15
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12. Overhauling procedures
Work precautions
• Before replacing parts, follow the instructions described in the troubleshooting.
• When servicing, always take care to keep proper footing.
• Before starting the service, always unplug the power cord from the outlet, or turn off the circuit breaker when
no power cord plug is provided. Sufficient care must be taken to avoid electric shock or injury.
• Make sure to connect the power supply wires correctly.
• After completing repairs, check that the unit operates properly.
Always wear gloves when servicing.
The part names in the text are standardized with the part names in the parts catalog. (There are some
exceptions.)
<Internal view and circuit board locations>
Power circuit board
(JT-37P2H)
Control circuit board
(JT-37M2H)
Sensor circuit board
(JT-37S)
Front panel
2
Unhook the inside claws (Indicated by
) of the front panel from the
base, and remove the front panel.
→
See page 5.
(2) Control circuit board (JT-37M2H)
1
Remove the front panel clamping screw.
(One PT screw 4 x 14, indicated by
)
<A bottom view of the product>
(1) Turn off the power supply.
•
Turn off the circuit breaker on the distribution board.
Tightening torque:
1.0 ± 0.1 N.m
